Filter.



AH. A. HILLS.

FILER. APPLICATION.. man Jul.; 2a. 1916.

Patented Apr. 9, 1918.

HENRY A. HILLS, OF GRAND RAPIDS, MICHIGAN.

FILTER.

y Specicaton of Letters Patent.

vPatenten am'. e, isis.

Application filed July 28, 1916. Serial No. 111,909.

To all whom t may concern:

Be it known that I, HENRY A. I-IiilLs, a citizen of the United States, and a resident of the city of Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in Filters; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the numerals of reference marked thereon, which form a part of this specification.

This invention relates to an improved type of small filter particularly designed for private garage use in filtering the cylinder oil from the crankcase of an engine so that the oil may be reused instead of thrown away. The iuid to be ltered is caused to traverse a tortuous passage and passed through different series of ltering means whereby a rapid and efficient filtration ofthe fluid is assured.

It is an object therefore of this invention to construct a filter wherein the fluid to be filtered is caused to travel through a series of compartments, each provided with filtering material, lin a manner to thoroughly and efficiently filter the fluid, so that the fluid drawn olf from the last compartment is entirely free from foreign matter and impurities. l

It is also an object of this invention to provide a lter comprising a plurality of concentrically arranged filtering compartments wherein the Huid is introduced into a central compartment and caused to traverse a tortuous passage through the respective concentric compartments and finally drawn o from the outermost thereof in a puried condition.

lt is furthermore an important object of this invention to construct a filter embracing a number of concentric filtering compartments arranged one within the other whereby a flow of fluid during a filtering operation takes place from the innermost to the outermost compartmentv through suitable filtering material disposed in each compartment to effect nal purication of the fluid in its passage through the filter.

The invention (in a preferred form) is illustrated in the drawings and hereinafter more fully described. ln the drawings:

Figure l is a central vertical section taken through a filter embodying the principles of my invention.

Fig. 2 is a detail section on line 2 2 of Fig. l.

Fig.v 3 is a detail section on line 3-3 of Fig. l. l

Fig. 4: is a detail section on line V i-4: of Fig. 1.

As shown in the drawings:

The reference numeral 1, indicates a casing cylinder provided with a iianged top cover 2, and a bottom cover or head 3. Interposed beneath the top cover 2, is a fianged inner cover member which is provided'with a relatively large central aperture, and eX- tending downwardly therefrom and integral therewith or riveted therearound is a long depending conical member 5. The lower endV ofthe conical member 5, is open and spaced a slight distance from the bottom 3, of the filter, and mounted transversely within said conical member 5, a short distance from the lower open end thereof is a screen v 6, upon which a quantity of filtering material 7, is supported.

Mounted in concentric relation within the cylinder 1,'are smaller cylinders 8 and 9,

' respectively, ofA which the cylinder 8, is vflanged at its lower end and is secured upon the bottom 3, and at its upper end projects beneath the flanged end ofthe conical member 5, and the cylinder 9, is flanged at its lower end vand also secured upon the bottom 3, and being of greater diameter than the cylinder 8, is spaced therefrom andv also from the walls of the main cylinder l. An aperture 10, is provided in the inner cylinder 8, slightly below the middle thereof, and secured on the exterior surface of said -cylinder and registering with said aperture, is a rounded channel member 11, which provides a passage leading downwardly from said aperture to near the bottom 3, of the filter. Mounted between the respective cylinders 8 and 9, and extending upwardly from the bottom 3, to a point slightly below the aperture l0, is a concentrically disposed by Athe Y filteringmaterial.

cylinder 12, and similarly between the cylinder 9, and the walls 1, of the casing of the filter, another cylinder 13, is disposed, which is of slightly less height than said cylinder 12. Laid upon the bottom 3, of the filter, between the respective cylinders 8, 12, 9, and 18, are coiled springs 14, and packed between the walls of said respective cylinders and held spaced from the floor 3, by said coiled springs 14:, is a filtering material 15. A pluralityof apertures 16, are provided in the lower end of the cylinder 9, :to-afford communication between the compartments oni each side thereof, and an outlet fpipe l17',

:tubular member 11, tothe lower .end of the compartment between the .small'cylinder 12, fand Ycylinder 8, and fi-s 'distributed evenly Vover the bottom .of :the .compartment owing to the Space lafforded by the .springs .1a. The siuid then rises Vupwardly ythrough 'the `filtering material 15, .andspills .over the up- ;pergedge of the small cylinder 12, and-passes downwardly through, the vadditional filtering ,material 15, to the bottom ofthe filter and .through apertures 1,6, inthe :lower end yof Vthe .cylinder 9, rising upwardly within the ysmall cylinder 13, and the yfiltering.materiah `and thereafter :spilling Jover the upper kedge thereof. into the free space between thesmall cylinder 13, land the -outer wall 1, of the filter. The-coiled springs 14, at the bottom `of :the lfilter yserve to Imaintain the filtering material 15, spaced therefrom, so that the passages .from the various `annular .compartments one to another `will not become closed The purified fluid :is drawn off "through `the'foutlet pipe 17. Access to the interioi'ctthe '-lter yis readily had r1through :the upper end thereof for cleaningor replacement of the iltering ma- .'.terial 15.

I am afware'that various details `of construction magy be varied through a wide irange without xdeparting from the principles .of-this invention, and :1 therefore do not ypur- ;pose limiting the patent ,.granted 1otherwise than necessitated b-y the priorart.

l claim as -my invention 1. A fiilter .of the class described having van inlet andl outlet, comprising :a plurality ofconcentrically arranged cylinders, sa plurality of annular compartments afforded thereby, filtering material disposed in said annular compartments constraining the fluid to traverse a tortuous passage through the filtering material passing' from the inlet 'to the outlet of the filter and a coiled spring in each VCylinder containing filtering mate- .rial for spacing the material -from the bottom of the filter.

1n a. filter of the class described, an inlet and loutlet therefor, a plurality of concentricaally arranged cylinders aording a plurality of annular compartments, filtering material disposed in certain of said compartments whereby the Vfiuid fbeing filtered .isfconstrained tovtraversea tortuous passage concentric members, one `disposed between the :aforesaid Vmembers rand :one `between the members :and the casing providingV a plurality aofshort annular chambers, all '.offsaid concentric chambers communicating :and

torming fal tortuous vpassage for :the passage fof :duid to be filtered therethrough, filtering material disposed in some of said chambers, means fforfsu-pjportingwthe filtering material vand spacing the :same from the bottom lof the chambers, 2a .central -member depending linto the casing, :and filtering :material therein. f

4;. A filtering device comprising-a casing,

Aa plurality of y.concentric cylinders in said casing extending 1the :full length thereof and one apertured at the bottom and another apertured higher up lin-.the casing, .la conical ymember projecting :into the interior cylinder with a lower lopen end ,projecting below the aperture fin fone-of athe cylinders and a l--plurality of short cylinders of 4different' Y 4lengths disposed alternata-ily with ythe long cylinders `and Va .filtering materia-l disposed in :said .cone and ybetween some. of the cylinders.

5. A filtering -idevice comprising ya casing, plurality of concentric cylinders 'in said `casing;extending the ffull Alength thereof and Vone:apertnred at the bottom :and another-rap- `erf-tured 4higher up Ain :the casing,.a fconical.

Imember ,projecting into the Ainterior cylinder with a Vlower open end yprojecting below .the aperture in one :of thecylinders, a

@plurality -of short cylindersv of different lengths disposed alternately with the .long

cylinders, a Adiltering .material 'disposed in said cone and between some of the cylinders, and a plurality of members in said cylinders resting on the bottom of the casing and ltering material supported between the cylinders.

6. A filtering device comprising a casing, an inner cylinder, a passage extending from a point above the bottom to a point close to the bottom, a short cylinder extending from the bottom to a point below the top of said passage, a cylinder outside of said short cylinder and longer than the same, said cylinder having an opening at the bottom, a short cylinder outside of said last named cylinder and a conical member extending from the top of the casing into the first named cylinder having its lower end disposed between the openings in said passage.

7. A filter comprising alternately disposed concentric long and short cylinders having Gopiee of this patent may be obtained for communicating passages, coiled springs in Y the bottom of some of said cylinders and filing material supported on said coiled springs, the outer and inner cylinders having no lfiltering material therein, a conical member extending into the inner cylinder and filtering material therein.

In testimony whereof I have hereunto subscribed my name in the presence of two subscribing witnesses.

Y HENRY A. HILLS. Witnesses:

CHARLES W. HiLLs,.Jr., EARL M. HARDINE.

ve cents each, by addressing the Commissioner of Patenti,

Washington, D. C. 

